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Figure 40 Multiple devices, multiple media pools
Implementing a media rotation policy
What is a media rotation policy?
A media rotation policy defines how media are used during backup, including the
following. In defining a media rotation policy, answer the following questions:
•
How many backup generations are needed?
•
Where are media stored?
•
How often media are used?
•
When can media be overwritten and re-used for new backups?
•
When are media old enough to be replaced?
Traditional backup strategies used with older backup tools required a thoroughly
planned and well defined media rotation policy controlled by the administrator rather
than a backup application. With Data Protector, you can implement a rotation policy
by specifying usage options such that media selection for subsequent backups is
done automatically.
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